Mechanism for embroidery-stitching.



Y J. PINK. MEUHANISM FOR EMBROIDERY STITG HING. APPLICATION FILEDJ'AN.20, 1913.

1,095,1 99. Patented May 5, 1914.

- I 2 sEnnTs-sHnnT 1.

WITNESSES INVENTOR 1/ OH/V F7/V/I W M ATTORNEYS J. PINK. MECHANISM FOREMBROIDERY STITOHING.

APPLICATION FILED JAN. 20, 1913.

Patented May 5, 1914.

2 SHEETS-SHEET 2.

INVENTOR c/U/l/V FIN/l WITNESSES A TTOHNE V S JOHN FINK, or NEW YORK, N.Y.

MECHANISM FOR EMBROIDERY-STITCHING.

Specification of Letters Patent.

Patented May 5, 1914.

Application filed January 20, 1913. Serial No. 743,049.

To all whom it may concern:

Be it known that I, JoHN FINK, a citizen of the United States, residingin the city, county, and State of New York, have invented a certain newand useful Improvement in Mechanism for Embroidery-Stitching, of whichthe following is a specification.

My invention relates to a novel mechanism for making a double embroiderystitch or seam of a particular type which will be hereafter set forth,comprising two parallel connected seams.

My invention relates more particularly to a combination of needles and alooper suit able for practicing my improved method.

The object of my invention is to provide a suitable arrangement ofneedles and a looper adapted to cooperate therewith, which arrangementmay be applied to sewing machines of known type for the practice of themethod and the making of the stitch to be described.

My invention will be better understood by reference to the accompanyingdrawings in which- Figure 1 represents an elevation, partly in section,of the sewing head of a machine as equipped with the mechanism of myinvention; Fig. 2 represents an end elevation, also partly in section,taken from the left of Fig. 1; Fig. 3 represents a partial enlargedlongitudinal sectional elevation through the center of the needle andlooper holder showing the particular arrangement of needles and looperused in my machine; Fig. t represents a view similar to Fig. 3, butshowing the needles and looper as positioned when the element of thestitch is more completely formed; Fig. 5 represents another view similarto Fig. 3 showing still a third stage of the formation of the stitchelement, the looper driving mechanism being omitted; Fig. 6 represents asectional plan view taken along the line 6-6 of Fig. 8; Fig. 7represents a similar view taken along the line 7-7 of Fig. 4; Fig. 8represents a diagrammatic view showing the position of the needles withrelation to the stitch at a particular stage of its formation; Fig. 9represents a perspective view of the needle nipple; and Fig. 10represents a plan view, taken from the under side, of my improved stitchin one of its applications.

Referring to the drawings, the two needles and the looper are shownapplied to a sewing machine ofknown type, and my invention relates in noway to said mechanism.

In the prior art, for the production of embroider'y stitches, sewingmachines have been employed having two needles and a looper, but in suchcases, the needles have either been two hooked needles or twosewingneedles. The looper also has been constructed differently from thelooper herein to be described and has acted upon the thread in adifferent manner. The mode of operation of the combined needles andlooper has therefore been different from that which is now to bedescribed.

In the drawings, 1 represents a hooked needle or a needle provided witha hook 2 at lts end, while 3 represents a sewing nee dle provided withthe usual elongated hole 4 near its end for the insertion of a thread.These two needles are arranged and held (by set screws) side by side ina holding member 5 adapted to reciprocate up and down in the sewinghead; the lower end of the needles passes through a tube 5 also adaptedto reciprocate, at the bottom of which is removably held a nipple 6.This nipple is provided with a central hole 7 through which passes thehooked needle, and with a. lateral slot 8 in which lies the sewingneedle. By using a slot 8 instead of merely a hole as has beenpreviously done in the art I am enabled to thread the sewing needle muchmore easily and quickly.

At the top of a rotatable spindle 9, held in the frame of the machinebelow the bed 10 thereof and in alinement with .the member 5, 1s alooper 11. This looper comprises an elongated base member 12 havingparallel sides adapted to fit between and slidably engage the walls of arecess 13 at the top of spindle 9; a clamp 14- attached to a rod 15passing through the center of spindle 9 rests upon the top of basemember 12 and is adapted to be held fast by a nut-16 at the bottom.Extending upwardly from the base 12 is an arm 17 terminating a shortdistance below the upper surface of the machine bed 10 and having uponits end a horizontally disposed fork shaped member 18 comprising anouter sharp and circularly curved hook 19 and an inner blunt finger 20,the hook and finger thus including a notch between them.

At the inside of the sewing needle just above the hole 1 is formed adepression 21 and the shape of hook 19 is so determined and both thelooper and the sewing needle are so located that when said needle is atthe proper height, the looper, if rotated, will cause the hook 19 to fitthe depressionv 21 as it passes the needle.

The two needles 1 and 3 are arranged in .the sewing head of the machinein such a way that, in the operation of the machine, the needles aresimultaneously lowered and raised. In the same way, the spindle 9, towhich the looper 11 is attached, is rotated by means of the worm 22 atthe bottom of said spindle and the worm 23 attached to reciprocatingshaft 24.

The feed is accomplished by means of the tube 5 with its nipple G and bya presser foot 25 provided with a circumferential rubber ring 26. Thispresser foot in a forward position, clamps fabric 27 upon the bed 10,moves to the rear carrying the fabric with it, is then lifted, carriedforwardly and again clamped upon the fabric, and the operation repeated.While the presser fcotis down the nipple 6 is up and vice versa. Thismotion of the presser foot takes place at spaced regular intervals incorrespondence with the operation of the needles and the looper, as willbe hereafter explained. The mechanism for operating the presser foot andtube 5 in the manner set forth, is usual in sewing machines.

The operation of my invention is as follows: The fabric being inposition and clamped against the bed of the machine by the presser footand the machine started, the reciprocating tube 5, carrying the needles,moves downwardly so as to push the needles through the goods into theposition shown in Fig. 3. Simultaneously the looper is rotated by meansof spindle 9 and brought into the position shown in the same figure. Inthis position the curved hook 19 lies in the depression 21 of the sewingneedle. Continued operation of the machines causes the needles to riseslightly without appreciable further rotation of the looper so that theloop 28 of the thread onthe under side of the fabric widens somewhatowing to thefriction of the thread with the fabric as the needle rises.

' Further operation of the machine causes the looper to rotate rapidly,the curved hook 19 entering the loop, drawing it out and carrying itsinner element 29 over the hook 2 of the hook needle. The mechanism ofthe machine is so arranged that this ortion of the rotation of thelooper takes .p ace at a high speed as compared with the amount ofupward motion of the needles. F urtheroperation of the machine causesthe needles to be lifted-upwardly to above the fabric, when the presserfoot will move the fabric backward, and then step forward and againclamp the fabric to the bed of the machine. The needles are then againpushed through the fabric and the looper completes its rotation to theposition shown in Fig. 3. The

cycle of operations is then repeated. In the preceding operation, thehooked needle 1, after the loop element 29 has been placed in the hook 2by the looper, draws the loop up through the fabric, and as the fabricis moved to the rear by the presser foot, pulls out the loop as shown inFig. 8. When the needles move down through the fabric, the thread iscarried by the sewing needle, down through said fabric, while the loopcarried upon the hook needle will be left lying upon the top of thefabric. When the hook needle rises again it will bring with it a newloop and draw the same through the aforesaid old loop when the new loopwill be drawn out by the feed which has been described.

As described, thestitch produced is as illustrated in Fig. 8, being adouble line of stitching, one side of which comprises a row of chains'orloops with the stitching connected on the under side by cross elements.If preferred, this stitch may be modified by causing the cross elementsto include, between themselves and the fabric, a bundle of threads 30which may be colored, if desired; or, instead of threads, a cord or abundle of threads or long fibers of any desired kind may be employed.

By loosening the nut 16, thereby releasing the clamp 14, the looper maybe shifted in the recess 13. By employing different nipples 6 havinghole 7 and slot 8 at different distances apart and by choosing asuitable nipple for the various positions of the looper, the doublestitch may be widened or narrowed as taste or necessity may suggest.

As stated, the mechanism used for operating the needles and the looperin the manner set forth is all old and I make no claim to any partthereof. What I do claim and desire to secure by Letters Patent is thearrangement of sewing needle, hooked needle and looper set forth.

I therefore claim:

1. In an embroidery stitching machine, the combination of a hookedneedle and a seW- ing needle side by side and adapted to be reciprocatedvertically, and a movable looper provided with a single member which isarranged to engage the thread loop, draw out said loop and to finallyenga e the loop with the hook of the hooked needle.

2. In an embrodiery stitching machine, the combination of-a hookedneedle and a sewing needle held side by side and adapted to bereciprocated vertically, and a movable looper-provided with a singlebook which is arranged to engage the thread loop, draw out said loop andto finally engage the loop with the book of the hooked needle.

3. In an embrodiery stitching machine, the combination of a hookedneedle and a sewing needle held parallel with one another and adapted tobe reciprocated vertically and a looper having a single member which isarranged to move horizontally and enter the thread loop, then draw outsaid loop and finally to engage the loop with the hook of the hookedneedle.

4. In an embroider stitching machine, the combination of a liookedneedle and a sewing needle held parallel with one another and adapted tobe reciprocated vertically and a looper arranged to rotate upon avertical aXis and having a member which engages the thread loop at thesewing needle and then moves to the hooked needle, drawing out thethread as it moves, and engages the thread with the hook of said hookedneedle.

In an embroidery stitching machine, the combination of ahooked needleand a sewing needle held side by side and, adapted to be simultaneouslyreciprocated vertically, the sewing needle being provided with adepression, and a looper consisting of a hook and finger said hook beingadapted to be rotated continuously in the same direction so as to lie inthe depression so as to enter the loop and draw the same out and engageit with the hooked needle.

6. In an embroidery stitching machine, the combination of a hookedneedle and a sewing needle held side by side and adapted to besimultaneously reciprocated vertically, the sewing needle being providedwith a depression, and a looper fixed to and adapted to be rotated abouta spindle alined with said hooked needle said looper comprising a hookwhich moves into the depression as it passes the sewing needle thusentering the loop anddrawing the same but and engaging it with thehooked needle.

7. In an embroidery stitching machine, the combination of a hookedneedle and a sewing needle held side by side and adapted to besimultaneously reciprocated vertically, a nipple provided with an axialhole and a lateral slot for guidingand spacing said needles, a spindlealined with said hooked needle and adapted to be rotated, a looper fixedto said spindle and comprising a hook adapted to enter the loop and drawthe same out and engage it with the hooked needle,

and means for adjusting the looper as to the spindle so as to suit thedistance between the needles.

8. In an embroidery stitching machine, the combination of a hookedneedle and a sewing needle held side by side and adapted to besimultaneously reci-proeated vertically,

the sewing needle being provided With a depressi'on and a loopercomprising a hook said looper being adapted to be rotated in a planetransverse to the needles so as to cause the hook to lie in thedepression so as to enter the loop and draw the same out and engage itwith the hooked needle.

9. In an embroidery stitching machine, the combination of a hookedneedle and a sewing needle held side by side'and adapted to besimultaneously reciprocated vertically, the sewing needle being providedwith a depression, a looper comprising a hook said looper being adaptedto be rotated so as to cause the hook to lie in the depression, andmeans for continuously rotating the looper so as to enter the loop anddraw the same out and engage it with the hooked needle.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

. JOHN FINK. Witnesses:

ELMER G. WILLYOUNG, I Fnrrz ZIEGLER, Jr.

